static int xen_cpu_up_prepare_hvm(unsigned int cpu) { int rc; /* * This can happen if CPU was offlined earlier and * offlining timed out in common_cpu_die(). */ if (cpu_report_state(cpu) == CPU_DEAD_FROZEN) { xen_smp_intr_free(cpu); xen_uninit_lock_cpu(cpu); } if (cpu_acpi_id(cpu) != U32_MAX) per_cpu(xen_vcpu_id, cpu) = cpu_acpi_id(cpu); else per_cpu(xen_vcpu_id, cpu) = cpu; xen_vcpu_setup(cpu); if (xen_have_vector_callback && xen_feature(XENFEAT_hvm_safe_pvclock)) xen_setup_timer(cpu); rc = xen_smp_intr_init(cpu); if (rc) { WARN(1, "xen_smp_intr_init() for CPU %d failed: %d\n", cpu, rc); return rc; } return 0; }
static int xen_cpu_dead_hvm(unsigned int cpu) { xen_smp_intr_free(cpu); if (xen_have_vector_callback && xen_feature(XENFEAT_hvm_safe_pvclock)) xen_teardown_timer(cpu); return 0; }
static void xen_pv_cpu_die(unsigned int cpu) { while (HYPERVISOR_vcpu_op(VCPUOP_is_up, xen_vcpu_nr(cpu), NULL)) { __set_current_state(TASK_UNINTERRUPTIBLE); schedule_timeout(HZ/10); } if (common_cpu_die(cpu) == 0) { xen_smp_intr_free(cpu); xen_uninit_lock_cpu(cpu); xen_teardown_timer(cpu); xen_pmu_finish(cpu); } }